A symptom is something the patient senses and describes, while a sign is something other people, such as the doctor notice. For example, drowsiness may be a symptom while dilated pupils may be a sign. The symptoms overall of motion sickness include nausea, vomiting, and dizziness (vertigo). Other common signs are sweating and a general feeling of discomfort and not feeling well (malaise). Mild symptoms are categorized as headache, mild unease and yawning.
Carbon dioxide is transported in the blood from the tissue to the lungs in three ways: (i) dissolved in solution; (ii) buffered with water as carbonic acid; (iii) bound to proteins, particularly haemoglobin.Approximately 75% of carbon dioxide is transport in the red blood cell and 25% in the plasma.arbon dioxide transport in the tissue is summarized in Figure 1. It combines with water to form carbonic acid. This reaction is very slow in plasma but fast within the red blood cell owing to the presence of the enzyme carbonic anhydrase.
Additionally, hydrogen ion produced along with bicarbonate causes oxygen to be released from hemoglobin in our tissues. The opposite occurs in our lungs. As blood flows through the lungs, bicarbonate enters the red blood cell, where it is converted into carbon dioxide.Carbon dioxide then diffuses out of the red blood cell and into the lungs, where it is expired.n summary, carbon dioxide is a metabolic waste product of ATP synthesis. As our cells produce carbon dioxide, it diffuses into the blood, where it is transported to the lungs for expiration. Some of the carbon dioxide is transported dissolved in the plasma.